Generally speaking you're probably right that a character's actions, if supposedly following the script, are neither bloopers or continuity issues. Guess you could remove certain posts if you think they're not warranted. Then again if the post is something 'quirky' (rather than a blooper) that adds 'value' for the viewer, then maybe just leave it be.

Well, I would never take it upon myself to delete someone else's contribution to this wiki.  However, If I can come up with a reasonably logical explanation why a character may have done something that seems strange, I will post such an explanation.

To me the definition of a "continuity error" is when something is established in the storyline in the early present day shows, and then something happens because of the time travel storylines to alter it.  For example, when Vicki meets Sam on Widow's hill for the first time, he talks about Jeremiah building Collinwood for his fiancee and she died in the 1800s.  But when Barnabas comes to the present, we learn she was originally HIS fiancee, and when Vicki travels back to the 1790s we see this as well, and the Jeremiah only got interested in her as a result of a spell.  We also see that she would die that year.  That changes history right there.  Other things like this would happen throughout the series, and also endup being "changes in history".  For example, in the 1890s Isabella Hoopes plays Grandma Edith as an old woman who dies early in the storyline.  When they did 1840 later on, Terry Crawford plays an "Edith" who is believed to be the same character and dies there.  Although the crew picked the time travel years "carefully" so characters would not "bump into each other", the dying of Edith in 1840, let alone of Angelique at the end of that storyline, changes history especially 1897.  What surprised me, is that when the series briefly went back to the present before shifting back to the 1840s and going into and staying in the Parallel Time room, Barnabas asks if everyone is ok including asking about Quentin (1897 and now present day).  If history was changed in 1897 because of 1840, it's a surprise that Quentin 1897 still obtained immortality (because of Tate's portrait) and lived into the 1970s.  It's almost as if Quentin 1897 did not exist and Quentin Present Day was someone who had been a present day family member from the beginning and yet we know he wasn't.

1840 ended the timeline.

Angelique is really dead.

Nobody puts Barnabas back in the box.

Where can you go after that?

At the end of 1840, Angelique removes the curse before she has her powers removed by Stiles and is later killed by Trask.  Therefore there no need to send Barnabas back to the coffin.

The point about what Sam Evans told Vicki that day on Widow's Hill I don't consider a continuity error at all. It could simply be the story as Sam learned it. It is very common for "history" as we know it to be different from what actually happened in the past.

But you raise good points about Edith.

When Sam tells her the story, that may have been true AT THE TIME.  Once Barnabas was introduced, they did more tinkering with the story in many places.  History was always changing.